Product Usage: These hanging bags are designed to securely fix the pool cover, preventing it from being blown away. The sturdy buckle design makes installation easier and reduces looseness, ensuring that the pool cover remains flat PVC Material: These pool cover weight bags are made of thick PVC material, has the characteristics of antifreeze, tear resisting, and wear resisting, effectively preventing leakage and tearing, and can withstand harsh winter conditions Sealing Structure: The sealing edges and leakproof valve design can prevent any leakage, while also being easy to open and close, which helps maintain the weight and stability of the swimming pool water bag Convenient Use: The pool water bag features a wide mouth, allowing for quick filling and drainage, suitable for most garden hoses and faucets; Fill 1/2 or 3/4 above the ground to prevent cracking due to winter freezing and expansion Wide Applicability: These pool cover weight bags are suitable for swimming pools of various